/**
 * Work with distributed transactions.
 *
 * Distributed transactions provide so-called "2-phase commit".    The
 *   AMQP distributed transaction model supports the X-Open XA
 *   architecture and other distributed transaction implementations.
 *   The Dtx class assumes that the server has a private communications
 *   channel (not AMQP) to a distributed transaction coordinator.
 *
 * @name Dtx
 * @exports Dtx as api.Dtx
 * @class
 */


/**
 * Confirm transaction mode.
 *
 * This method confirms to the client that the channel was successfully
 *     set to use distributed transactions.
 *
 * @name Dtx#selectOk
 * @event
 * 
 */

/**
 * Confirm the start of a new distributed transaction.
 *
 * This method confirms to the client that the transaction started.
 *     Note that if a start fails, the server raises a channel exception.
 *
 * @name Dtx#startOk
 * @event
 * 
 */



/**
 * Select standard transaction mode.
 *
 * This method sets the channel to use distributed transactions.  The
 *     client must use this method at least once on a channel before
 *     using the Start method.
 *
 * @name Dtx#select
 * @function
 * 
 */

/**
 * Start a new distributed transaction.
 *
 * This method starts a new distributed transaction.  This must be
 *     the first method on a new channel that uses the distributed
 *     transaction mode, before any methods that publish or consume
 *     messages.
 *
 * @name Dtx#start
 * @function
 * @param {String} dtxIdentifier The distributed transaction key. This identifies the transaction
 *       so that the AMQP server can coordinate with the distributed
 *       transaction coordinator.
 */

